Support comma as decimal separator in SI value parsing

Part names using European decimal notation (e.g. "4,7 kΩ", "2,2uF")
were parsed incorrectly because the regex only recognized dots. Now
commas are normalized to dots before parsing, matching the existing
pattern used elsewhere in the codebase (PartNormalizer, price providers).

Author: wschopohl

src/Doctrine/Functions/SiValueSort.php

@@ -82,7 +82,10 @@ public function getSql(SqlWalker $sqlWalker): string
         assert($this->field !== null, 'Field is not set');
 
         $platform = $sqlWalker->getConnection()->getDatabasePlatform();
-        $fieldSql = $this->field->dispatch($sqlWalker);
+        $rawField = $this->field->dispatch($sqlWalker);
+
+        // Normalize comma decimal separator to dot for SQL platforms (European locale support)
+        $fieldSql = "REPLACE({$rawField}, ',', '.')";
 
         if ($platform instanceof PostgreSQLPlatform) {
             return $this->getPostgreSQLSql($fieldSql);
@@ -92,6 +95,9 @@ public function getSql(SqlWalker $sqlWalker): string
             return $this->getMySQLSql($fieldSql);
         }
 
+        // SQLite: comma normalization is handled in the PHP callback
+        $fieldSql = $rawField;
+
         if ($platform instanceof SQLitePlatform) {
             return "SI_VALUE({$fieldSql})";
         }
@@ -168,6 +174,9 @@ public static function sqliteSiValue(?string $value): ?float
             return null;
         }
 
+        // Normalize comma decimal separator to dot (European locale support)
+        $value = str_replace(',', '.', $value);
+
         // Match a number at the very start (allowing leading whitespace), optionally followed by an SI prefix
         if (!preg_match('/^\s*(\d+\.?\d*)\s*([pnuµmkKMGT])?/u', $value, $matches)) {
             return null;

tests/Doctrine/Functions/SiValueSortTest.php

@@ -37,7 +37,7 @@ public function testPostgreSQLGeneratesCaseExpression(): void
         $sql = $function->getSql($this->createSqlWalker(new PostgreSQLPlatform()));
 
         $this->assertStringContainsString('CASE', $sql);
-        $this->assertStringContainsString('substring(part_name', $sql);
+        $this->assertStringContainsString("REPLACE(part_name, ',', '.')", $sql);
         $this->assertStringContainsString('1e-12', $sql);
         $this->assertStringContainsString('1e-9', $sql);
         $this->assertStringContainsString('1e-6', $sql);
@@ -56,7 +56,7 @@ public function testMySQLGeneratesCaseExpression(): void
         $sql = $function->getSql($this->createSqlWalker(new MySQLPlatform()));
 
         $this->assertStringContainsString('CASE', $sql);
-        $this->assertStringContainsString('REGEXP_SUBSTR(part_name', $sql);
+        $this->assertStringContainsString("REPLACE(part_name, ',', '.')", $sql);
         $this->assertStringContainsString('1e-12', $sql);
         $this->assertStringContainsString('1e6', $sql);
     }
@@ -106,11 +106,16 @@ public static function sqliteSiValueProvider(): iterable
         yield 'plain_integer' => ['100', 100.0];
         yield 'plain_decimal' => ['4.7', 4.7];
 
-        // Decimal values with prefix
+        // Decimal values with prefix (dot separator)
         yield 'decimal_nano' => ['4.7nF', 4.7e-9];
         yield 'decimal_micro' => ['0.1uF', 0.1e-6];
         yield 'decimal_kilo' => ['2.2k', 2.2e3];
 
+        // Comma decimal separator (European locale)
+        yield 'comma_kilo' => ['4,7k', 4.7e3];
+        yield 'comma_micro' => ['2,2uF', 2.2e-6];
+        yield 'comma_kilo_space' => ['1,2 kΩ', 1.2e3];
+
         // Number NOT at the start — should return NULL
         yield 'prefixed_name' => ['CAP-100nF', null];
         yield 'name_with_number' => ['R 4.7k 1%', null];